"He who marches out of step hears another drum." ~ Ken Kesey
Quote from: SI on August 14, 2016, 10:51:18 PMHard 7 on the Stauffer striplet em sit in the sun for a couple hours and see if they still do it. i've used phu and seem to recall the bottom of the screen being a little sweaty.. not wet but tape didn't stick.
Hard 7 on the Stauffer strip
Have the same issue here, including with SP1400. Painters tape will stick for a while, but not long great. Have tried every tape I can think of and nothing is for sure on a longer run. Only happens with certain inks though. Matsui spot black has no issues, but something like TW Graphics 5500 white will have tape fall off in 5 minutes. I am seriously baking the screens and they aren't breaking down, so it isnt an exposure issue.
We always use emulsion to block out reg marks/film labels on DC/Waterbase screens. We just switched to the Murakami T9 from the SP1400 cut our exposure time down significantly. We just ran a 250pc discharge job yesterday with no problems. Looking to test it on larger runs this fall. We did let it bake in the sun for a while and post expose...not sure if both were necessary but I always do as much as possible to help ensure screen holds up. We also had good luck with the Kiwo multitex on runs up to 4,000pcs but it was tough to strip for us. Our goal is to find 1 emulsion for plast and WB screens. I remember reading somewhere to not tape waterbase/DC screens on the bottom or shirts side. I think it mentioned that it could create a moisture barrier causing the screen to break down prematurely. It needs to "breathe" on the shirts side. Happened to us early on when we first started doing WB work a few years back and we've not taped the bottom side since then.
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